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A variant of flexor carpi ulnaris causing ulnar nerve compression
1Section of Orthopaedic Surgery, General Hospital, Winnipeg, Manitoba, Canada.
Journal of Anatomy
|February 1, 1992
Summary
Anatomical variations in wrist muscles and nerves are frequent. This case details a rare duplication of the flexor carpi ulnaris tendon and ulnar nerve splitting, offering insights into wrist anatomy.
Area of Science:
- Anatomy
- Human Anatomy
- Clinical Anatomy
Background:
- Anatomical variations of wrist muscles and nerves are well-documented.
- Knowledge is primarily from dissections and clinical case reports.
- Variations in the flexor carpi ulnaris tendon are significant for wrist function.
Observation:
- A rare case of flexor carpi ulnaris tendon duplication was observed.
- The ulnar nerve was found to be split concurrently with the tendon duplication.
- The duplicated tendon exhibited distinct insertion points.
Findings:
- One slip of the flexor carpi ulnaris tendon inserted into the pisiform bone.
- The other slip, the radial slip, inserted into the proximal phalanx of the ring finger.
- This presentation highlights a unique anatomical variant of the flexor carpi ulnaris.
Implications:
- Understanding such anatomical variations is crucial for accurate diagnosis and surgical planning.
- This case contributes to the literature on wrist and hand anomalies.
- Awareness of these variations can improve clinical outcomes in hand surgery and neurology.